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In IE on Windows 10 with default settings, if I perform a window.open() against an external internet site from a page on my local machine or a server on my local network, I get null.
See my repro below. This doesn't happen in IE on Windows 7 or Google Chrome.
Interestingly, if I turn on "Enable Protected Mode" for the Intranet Zone (so that Protected Mode are the same in the Intranet Zone and Internet Zone), then the problem goes away. However, I need this to work without requiring users to do this.
I haven't found any clear Microsoft documentation that explains this behavior. I raised an issue on this on the EdgeHTML issues site, but wanted to see if the community on SO has any insight into why this is happening.
Thanks!
<!DOCTYPE HTML>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<script>
var popupWindow = null;
function openWindow() {
popupWindow = window.open('http://microsoft.com', '_blank', 'left=100;top=100;height=100;width=100');
}
function checkWindowStatus() {
if (popupWindow) {
document.getElementById('status').innerHTML += '- Truthy reference. Closed? ' + popupWindow.closed + '</br>';
} else {
document.getElementById('status').innerHTML += '- Falsy reference: ' + popupWindow + '</br>';
}
}
</script>
</head>
<body>
<h2>Popup Issue</h2>
<button onclick="openWindow()">Open Window</button>
<button onclick="checkWindowStatus()">Check Window Status</button>
<button onclick="popupWindow.close()">Close Window</button>
<p id="status"></p>
</body>
</html>
617
It seems that protected mode doesn't allow to open new window outside of the current domain, so you can try to open the window with a blank page and after update the location.
<script>
var popupWindow = null;
function openWindow() {
popupWindow = window.open('', '_blank', 'left=100;top=100;height=100;width=100');
popupWindow.location = 'http://microsoft.com';
}
function checkWindowStatus() {
if (popupWindow) {
document.getElementById('status').innerHTML += '- Truthy reference. Closed? ' + popupWindow.closed + '</br>';
} else {
document.getElementById('status').innerHTML += '- Falsy reference: ' + popupWindow + '</br>';
}
}
</script>
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